/*
 * Copyright (C) 2019 ByteDance Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.bytedance.scene;

import ohos.aafwk.ability.Ability;
import ohos.aafwk.ability.AbilityPackage;

public class SceneViewModelProviders {
    private SceneViewModelProviders() {

    }

    private static AbilityPackage checkApplication(Ability ability) {
        AbilityPackage application = ability.getAbilityPackage();
        if (application == null) {
            throw new IllegalStateException("Your ability is not yet attached to "
                    + "Application. You can't request ViewModel before onCreate call.");
        }
        return application;
    }

    private static Ability checkAbility(Scene scene) {
        Ability ability = scene.getAbility();
        if (ability == null) {
            throw new IllegalStateException("Can't create ViewModelProvider for removed scene");
        }
        return ability;
    }
}
